宽频带频谱感知中的快速边界识别方法  

A novel fast edge detection method in wide-band spectrum sensing

作　　者：金帅臣 马慧 唐洪莹 覃荣华[1] JIN Shuaichen;MA Hui;TANG Hongying;QIN Ronghua(Key Laboratory of Microsystem Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海微系统与信息技术研究所微系统技术重点实验室,上海201800 [2]中国科学院大学,北京100049

出　　处：《中国科学院大学学报（中英文）》2022年第6期809-816,共8页Journal of University of Chinese Academy of Sciences

基　　金：中国科学院青年创新促进会资助。

摘　　要：以认知无线电为核心的动态频谱共享接入作为解决万物智联时代频谱稀缺问题的关键技术之一,快速、鲁棒的频谱感知是动态接入的基础。优化改进一种基于能量检测的宽带频谱感知方法,在无需先验信息的情况下实现了快速频谱边界识别与信道状态判定。实验结果表明,本方法适用于宽频带频谱盲感知,且在低信噪比情况下具有良好的性能。The explosive growth of traffic demand in the era of internet of everything has resulted in the spectrum scarcity,which enabled a rapid development of dynamic spectrum access technologies in cognitive radio(CR).Fast and robust spectrum sensing method is evoked as the base of dynamic access.We optimized a wide-band spectrum sensing method based on energy detection.The optimized method can implement spectrum edge detection and channel state determination fast without any prior information(bandwidth,power spectrum density,etc.).Results show that our method is suitable for the wide-band blind spectrum sensing,and has an acceptable performance in low SNR scenario.

关 键 词：认知无线电 频谱感知 能量检测 边界识别 信道状态判定 

分 类 号：TN929[电子电信—通信与信息系统]